Frequency-digital signal conversion circuit

Details Frequency-digital signal conversion circuit Frequency-digital signal conversion circuit

2005-09-13

2005-09-13

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Phase or time of phase change

Synchro or resolver signal

Reexamination Certificate

active

06943711

ABSTRACT:
There is provided a frequency-digital signal conversion circuit for automatically converting a clock frequency into a digital signal. The frequency-digital signal conversion circuit includes: a frequency detecting unit for detecting a frequency of an input clock signal; a latch unit for sampling and latching an output of the frequency detecting unit; and a digital signal generating unit for receiving an output of the latch unit and generating a digital signal of a predetermined bits with respect to the frequency of the input clock signal.

REFERENCES:
patent: 3912869 (1975-10-01), Ullakko
patent: 4009402 (1977-02-01), Miller
patent: 4025868 (1977-05-01), Miki et al.
patent: 4107600 (1978-08-01), McMannis
patent: 5369404 (1994-11-01), Galton
patent: 6370555 (2002-04-01), Bartkowiak

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